Sujit

An advertisement is to contain 75 sq.cms of printed area. There is a 2cm margin at the bottom, 3cm margin in each side and no margin at the top. Find the dimensions of the smallest possible poster.

Prove that the correlation coefficient r lies between -1 and +1.

A hollow steel tube of 2.5cm external diameter and 2.0cm internal diameter is used as a column 3m long with both ends hinged. Determine the Euler’s crippling load, if elasticity is 2.0 x 106 kg / cm2 .

A timber column 15cm x 10cm in section is 3m long with both ends hinged. Determine the safe load, the column can carry with a factor of safety as 10. Tame E for timber as 1.055 x 102 t/m2 .

The principal stress at a point in a strained material are 126MPa tensile and 63 MPa tensile, the third principal stress being zero. Find by a circular diagram of stress the magnitude and direction of resultant stress on a plane inclined at 300 to the dir...